it all comes down to people's behavior. what do you mean? >> effective gun control has many facets to it. assault weapons ban is an element, significant symbolism. but the reality is you want to control behavior. the behavior of people. and that's what we did in the '90s here in new york. that's what i did in los angeles for seven years. crime is caused by people. you focus on their behavior and one of the behavioral changes is insuring that everybody that wants to buy a firearm has to basically submit to an i.d. check. that's form of behavior control. a lot of laws, a lot of tools are necessary, but effectively what you're doing is trying to control behavior. >> gretchen: you say that supersedes legislation. i just want to show some crime stats from new york when you were in charge here in the '90s. so murders fell 70%, car theft down 61. robbery down 55%. burglary down 53%. what did you do significantly about behavior? >> we had a very assertive police force, a very large police force. did the same thing in los angeles wi